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13 January 1998 <br /> AGE-NC Project No. 98-0398 <br /> Page 2 of 6 <br /> 3.0. ON-SITE CONTROL <br /> Timothy Cuellar has been designated to coordinate access control and security onsite. A safe <br /> perimeter has been established at 20 feet around boring/excavation. No unauthorized person <br /> should be within this exclusion area. <br /> 4.0. HAZARD EVALUATION <br /> The following substance(s) or hazards are known or suspected to be on site. <br /> SUBSTAIVC S 1CNVOLVEU: CONC. <br /> .ON <br /> Gasoline unknown <br /> Other organic-based products (?) unknown <br /> The primary hazards of each are identified as follows: <br /> 1. Hydrocarbon fuels - Components of fuels are colorless liquids with strong aromatic <br /> petroleum hydrocarbon-like odors. They are flammable and have low solubility in water. <br /> Exposure to these materials in excess of recommended exposure limits can cause mild eye, <br /> nose, and throat irritation and can produce a narcotic effect on the central nervous system. <br /> Symptoms of exposure at these concentrations include headache, nausea, drowsiness, <br /> dizziness,and loss of coordination.Certain components of gasoline(BTE&X etc.)are known <br /> or suspected carcinogens. <br /> The following additional hazards are expected on site: typical work related to facility.Noise. falling <br /> rods, flying hammer snapped cables etc on the backhoe/excavator(if applicable). <br /> 5.0. PERSONAL PROTECTIVE EQUIPMENT <br /> Based on evaluation of potential hazards, the following levels of personal protection have been <br /> designated for the applicable work areas or task: <br /> Advanced GeoEnvironmentai,Inc. <br />